The gas phosphine (ph3) is used as a fumigant to protect stored grain and other durable produce from pests. phosphine is generated where it is to be used by adding water to aluminum phosphide or magnesium phosphide. give formulas for these two phosphides.

1) Molecular formula for aluminium phospide is AlP. Aluminium has oxidation number +3 (metal from 13. group of periodic table) and phosphorus in phospides has oxidation number -3.

Aluminium phosphide is a highly toxic, solid inorganic compound.

2) Molecular formula for aluminium phospide is Mg₃P₂. Magnesium has oxidation number +2 (metal from 2. group of periodic table) and phosphorus in phospides has oxidation number -3.

when atmosphere interacts with biosphere they focuses on on the sources and sinks of green house gases (ghgs) air pollutants, particular matters, water and energy between the earth's surface and the atmosphere. the biosphere affects the climate. the atmosphere and biosphere are in constant interaction with each other, and all living things rely on gases in the atmosphere for life. organisms such as animals take in oxygen gas form the atmosphere to use in every cell of their body for smooth functioning of daily routine exercises.

the movement of aircraft through clouds can even cause lightning strikes. a single lightning event is a "flash", which is a complex, multi-stage explosively ejected.

explanation:

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